Madrid stars Dani Carvajal, Sergio Ramos, Nacho Fernandez, Dani Ceballos, Isco and Marco Asensio all started Tuesday's 6-0 Nations League thrashing of Croatia in Elche, while only Sergio Busquets was involved from a Barca perspective.

With Sergi Roberto the only other Barca player in the 23-man squad, there have been suggestions Madrid are becoming the dominant force within the national team, despite the presence of ex-Blaugrana head coach Luis Enrique.

However, Valverde highlighted that of those six Madrid players, only Nacho and Carvajal came through the youth system.

He also pointed to the absence of three Spain regulars over recent years from Barca who were not involved this time: Andres Iniesta and Gerard Pique, who have retired from international football, and the overlooked Jordi Alba.